Cowlitz, WA
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Cowlitz in Washington · Population: 111,539
TRI sites such as Westrock Longview LLC; Nippon Dynawave Packaging Co.; North Pacific Paper Co LLC Longview; SDWIS systems such as LONGVIEW WATER DEPARTMENT; KELSO CITY OF; BEACON HILL WATER & SEWER DISTRICT anchor Cowlitz, WA's EPA extract. Derived burden score 53/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Cowlitz include LAZY ACRES MOBILE HOME PARK (GU); BROOKSIDE; KELLEY CREST, while Westrock Longview LLC leads reported TRI pounds among local Form R filers. AQS median AQI 22 / peak 67 in 2024.
Burden score 53/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Cowlitz -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Cowlitz, WA: EPA TRI 2023 reporting year
Same facilities, both years
-11.3%
16 facilities that filed in 2022 and 2023
Whole inventory
-11.3%
2.3 million lb → 2.0 million lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Cowlitz, WA's total reported releases fell from 2.3 million lb in 2022 to 2.0 million lb in 2023, based on EPA TRI filings.
- Cowlitz, WA's air releases fell from 1.8 million lb in 2022 to 1.6 million lb in 2023, based on EPA TRI filings.
- Cowlitz, WA's off-site transfers fell from 313.5 thousand lb in 2022 to 290.4 thousand lb in 2023, based on EPA TRI filings.
- Cowlitz, WA's water releases fell from 200.0 thousand lb in 2022 to 186.1 thousand lb in 2023, based on EPA TRI filings.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 349 (95%) | 17 | 0 | 67 |
| 2023 | 323 (88%) | 42 | 0 | 89 |
| 2022 | 316 (87%) | 45 | 2 | 144 |
| 2021 | 355 (97%) | 10 | 0 | 64 |
| 2020 | 331 (90%) | 26 | 1 | 282 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Washington, see the EPA's AirNow.gov.
Water Systems (33)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| LONGVIEW WATER DEPARTMENT | 57,617 | 0 |
| KELSO CITY OF | 15,775 | 0 |
| BEACON HILL WATER & SEWER DISTRICT | 11,969 | 0 |
| WOODLAND CITY OF | 10,640 | 0 |
| KALAMA CITY OF | 8,020 | 0 |
| CASTLE ROCK MUNICIPAL WATER | 4,367 | 0 |
| TOUTLE COMMUNITY REGIONAL WATER | 3,215 | 0 |
| RYDERWOOD IMPROVEMENT & SERVICE AS | 434 | 0 |
| LEWIS RIVER RV PARK | 347 | 0 |
| LEWIS RIVER GOLF COURSE | 300 | 0 |
| PETERSON FARMS | 290 | 0 |
| COLUMBIA RIVERFRONT RV PARK | 233 | 0 |
| DAVIS TERRACE WATER ASSN | 222 | 0 |
| Beacon Hill East | 190 | 0 |
| CAMELOT SUBDIVISION | 142 | 0 |
| LAZY ACRES MOBILE HOME PARK (GU) | 126 | 2 |
| SANDWOOD HEIGHTS SUBDIVISION | 126 | 0 |
| OWL CREEK | 102 | 0 |
| BROOKSIDE | 100 | 5 |
| MERWIN VILLAGE/PARK PPL CO | 92 | 0 |
| VANRIDGE MOBILE HOME PARK | 71 | 0 |
| DESCHUTES MOBILE PARK | 62 | 0 |
| RIVERVIEW TRAILER PARK | 60 | 0 |
| TUKES MOUNTAIN HOMEOWNERS | 60 | 0 |
| PARADISE COVE RESORT & RV PARK | 59 | 0 |
| MAGNA VISTA WATER CORP | 56 | 0 |
| KELLEY CREST | 45 | 1 |
| TOUTLE RIVER VIEW | 45 | 0 |
| ESTATES AT LIVINGSTON MTN | 33 | 0 |
| Tulip Meadows | 33 | 0 |
| PLEASANT HILL TERRACE SUBDIVISION | 30 | 0 |
| VIKING VILLAGE MOBILE HOME PARK | 25 | 0 |
| HAZEL DELL MOBILE PARK | 24 | 2 |
TRI Facilities (18)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Westrock Longview LLC | 5.7M lbs |
| 2 | Nippon Dynawave Packaging Co. | 4.1M lbs |
| 3 | North Pacific Paper Co LLC Longview | 1.7M lbs |
| 4 | Lanxess Corp Kalama Site | 158.1K lbs |
| 5 | Skyline Steel Llc-Longview | 103.1K lbs |
| 6 | Westlake US 2 LLC - Longview | 49.1K lbs |
| 7 | Steelscape | 27.8K lbs |
| 8 | Glacier Northwest Inc Woodland Ready-Mix Plant | 7.1K lbs |
| 9 | Foster Poultry Farms Kelso Plant | 4.1K lbs |
| 10 | Solvay Chemicals Inc | 2.9K lbs |
| 11 | Glacier Northwest Inc Longview Ready-Mix Plant | 235 lbs |
| 12 | Fxi Inc. - Longview | 124 lbs |
| 13 | Woodland Usnr LLC | 86 lbs |
| 14 | Owens-Brockway Glass Container Inc - Plant #02 | 33 lbs |
| 15 | Hasa Inc | 21 lbs |
| 16 | Arch Wood Protection | 12 lbs |
| 17 | Kelso Rm | 1 lbs |
| 18 | Interfor Longview Div | 0 lbs |
Cities in Cowlitz (5)
Frequently Asked Questions
What is the environmental risk level in Cowlitz, Washington? ▼
Are there Superfund sites in Cowlitz? ▼
How many toxic release facilities are in Cowlitz? ▼
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.